<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
  <form action="divide" method="get">
    除数：<input placeholder="n1" type="number" name="n1"/><br/>
    被除数：<input placeholder="n2" type="number" name="n2"/>
    <input type="submit">
  </form>
</body>
</html>